Abaixo está uma instrução que descreve uma tarefa de geração de SQL, combinada com uma entrada que fornece mais contexto sobre os esquemas de tabela disponíveis. Escreva o código SQL que responda adequadamente à solicitação
 ###Instrução: Qual é o navio na linha Cunard de Liverpool de 19 a 29 de julho?
 ###Tabelas: CREATE TABLE alloys_for_mechanical_composition (alloys_for_mechanical_composition_id AUTO_INCREMENT PRIMARY KEY, Usage VARCHAR, Sn/Sb (%) VARCHAR, Liquid at (°C) VARCHAR, Casting at (°C) VARCHAR, Remelting at (°C) VARCHAR, Hardness VARCHAR) CREATE TABLE westbound_record_breakers_blue_riband_holders (westbound_record_breakers_blue_riband_holders_id AUTO_INCREMENT PRIMARY KEY, Ship VARCHAR, Year INT, Dates VARCHAR, Line VARCHAR, From VARCHAR, Distance VARCHAR, Days, hours, minutes VARCHAR, Speed VARCHAR) CREATE TABLE biggest_wins (biggest_wins_id AUTO_INCREMENT PRIMARY KEY, Margin INT, Score VARCHAR, Opponent VARCHAR, Venue VARCHAR, Date VARCHAR) CREATE TABLE singles_2–8 (singles_2–8_id AUTO_INCREMENT PRIMARY KEY, Outcome VARCHAR, Date VARCHAR, Tournament VARCHAR, Surface VARCHAR, Opponent VARCHAR, Score VARCHAR) CREATE TABLE pdc_premier_event_finals:_5_1_title_4_runner-ups (pdc_premier_event_finals:_5_1_title_4_runner-ups_id AUTO_INCREMENT PRIMARY KEY, Outcome VARCHAR, Year INT, Championship VARCHAR, Opponent in the final VARCHAR, Score (l) = score in legs, (s) = score in sets. VARCHAR)  
SELECT Ship FROM westbound_record_breakers_blue_riband_holders WHERE Line = cunard AND From = liverpool AND Dates = 19 – 29 july